An electrical model for energy efficiency evaluation of NiMH batteries

Zurfi, Ahmed; Zhang, Jing

doi:10.1109/ccece.2017.7946648

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…There are also some energy losses depending on design of accumulator. The Li-ion accumulators have the efficiency of 80-90%, the PB accumulators have 50 up to 92%, and the NiMH accumulators have the efficiency of about 66% [39][40][41]. Thus, the storage and further deliver of electric energy from the accumulators are accompanied with energy losses.…”

Section: Discussionmentioning

confidence: 99%

Assessing the Energy Efficiency of an Electric Car

Synák¹,

Kučera²,

Skrúcaný³

2021

Komunikácie

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Electric car does not supply all the electric energy, obtained from the electric network, to the wheels in the form of mechanical energy. During such a transformation, a part of this energy is lost. The article endeavours to determine the energy efficiency of selected electric car. The electric car used for measurements is not from the batch production since that is a vehicle designed at University of Zilina. The efficiency has been observed while driving under the conditions of amended methodology of New European Driving Cycle (NEDC). The measured value of electric car's efficiency is being analyzed from the energy consumption, as well as emission production, points of view.

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Section: Discussionmentioning

confidence: 99%

Assessing the Energy Efficiency of an Electric Car

Synák¹,

Kučera²,

Skrúcaný³

2021

Komunikácie

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“…Science typical charging and discharging losses of a battery including power conversion losses are in the range of 10-15%. the overall energy efficiency of a battery can be expected in the range of 70 to 90% (Krishnan et al, 2012;Zurfi et al, 2017). Such losses are also considered as loads and are accounted for during the design of power supply system for telecom towers.…”

Section: Additional Load Due To Conversion Losses In Batterymentioning

confidence: 99%

A review of renewable energy based power supply options for telecom towers

Deevela

Kandpal

Singh

2023

Environ Dev Sustain

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Telecom services play a vital role in the socio-economic development of a country. The number of people using these services is growing rapidly with further enhance growth expected in future. Consequently, the number of telecom towers that are critical for providing such services has also increased correspondingly. Such an increase in the number of telecom towers in a country implies a corresponding increase in the electricity demand of the country. Moreover, in view of growing concerns about climate change, it is necessary that the decarbonization of telecom towers is prioritized so as to minimize their carbon footprint. In view of the above, the primary objective of this paper is to provide a comprehensive analysis of various renewable energy-based systems and the advantages they offer for powering telecom towers, based on a review of the existing literature and field installations. Telecom towers are powered by hybrid energy systems that incorporate renewable energy technologies such as solar photovoltaic panels, wind turbines, fuel cells, and microturbines. Utilizing these systems helps to reduce the consumption of fossil fuels and consequently mitigates the anthropogenic carbon emissions. Moreover, information related to growth of the telecom industry, telecom tower configurations and power supply needs, conventional power supply options, and hybrid system combinations and their benefits. Several field installations of renewable energy-based hybrid systems have also been summarized. This review can help to evaluate appropriate low-carbon technologies and also to develop policy instruments to promote renewable energy-based telecom tower power systems.

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“…Inevitably, this process involves the dissipation of energy. As a result of polarization, the battery's energy dissipates during the charge-discharge process because coulomb losses from non-productive chemical side reactions and the battery's terminal voltage drops when current flows through it [21]. Therefore, while batteries are in operation, they lose energy during both cycle aging and calendar aging, and the amount varies depending on how they are used.…”

Section: State Of Efficiencymentioning

confidence: 99%

Modeling and Analysis on Efficiency Degradation of Lithium-ion Batteries

Lin¹,

Li²

2023

Preprint

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State of Efficiency (SOE) is proposed as a performance indicator of lithium-ion battery in terms of energy efficiency.• The degradation trajectory of SOE for NCA lithium-ion batteries is studied and a linear model is proposed to describe SOE degradation trend.• A number of factors that affect SOE have been identified and studied, including ambient temperature, discharge current, and cutoff voltage.

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An electrical model for energy efficiency evaluation of NiMH batteries

Cited by 5 publications

References 16 publications

Assessing the Energy Efficiency of an Electric Car

Assessing the Energy Efficiency of an Electric Car

A review of renewable energy based power supply options for telecom towers

Modeling and Analysis on Efficiency Degradation of Lithium-ion Batteries

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